80results about How to "Not prone to swelling" patented technology

The invention discloses a device and a method for realizing partial short-range nitrification-anaerobic ammonia oxidation by adding hydroxylamine, and belongs to the field of urban domestic sewage biological treatment. For two-stage partial short-range nitrification-anaerobic ammonia oxidation, the stable operation of the short-range nitrification is crucial to a process; the short-range nitrification is very difficult to start and maintain stably only through process parameter control; a very good nitrite accumulating effect can be achieved by adding the hydroxylamine in the patent; partial short-range nitrification reactors can be started and high nitrite accumulation can be maintained within a short time. The hydroxylamine serves as an intermediate product in a nitrifying process, is a reducing agent of ammonia monooxygenase and a stimulating agent of AOB (Ammonia Oxidizing Bacteria) and can improve the cell yield of the AOB; meanwhile, the hydroxylamine is an inhibiting agent of NOB (Nitrite Oxidizing Bacteria) and can elutriate the NOB. Compared with a conventional denitrogenation process, a partial short-range nitrification-anaerobic ammonia oxidation process can save aeration quantity and carbon source, and is particularly suitable for urban domestic sewage with low C/N.

The invention discloses a processing method of coking steaming ammonia wastewater. The processing method of the coking steaming ammonia wastewater comprises pretreatment of coking steaming ammonia wastewater and biochemical treatment of the coking ammonia wastewater. The pretreatment of the coking steaming ammonia wastewater uses an adjusting pool, an internal electrolysis reactor, a Fenton oxidation pond and a coagulative precipitation tank. A sequencing batch membrane bioreactor technology is adopted by the biochemical treatment, and working procedures of inflow, unused-leaving, reacting and discharging are sequentially performed according to a time period. The processing method of the coking steaming ammonia wastewater can effectively remove persistent organic pollutants and ammonia nitrogen, strengthen effluent quality, and reduce operational and investing costs of equipment.

A/O biological biologic denitrifying reactor, adjustment of nitration process, its fuzzy on-line controller and controlling method are disclosed. The process is carried out by stirring in oxygen-deficient area continuously, denitrifying reacting, aerating in oxygen area continuously, enlarging opening of aerator air intake valve with higher ammonia nitrogen water charge load or lower ammonia nitrogen outfall concentration, decreasing opening of aerator air intake valve reversely, shutting or opening air intake vale with different grid chambers, opening or shutting stirrer in related reaction pool, and enlarging or decreasing opening of refluxing mud valve to adjust mud concentration in reactor. It achieves higher efficiency and less consumption.

The invention discloses a real-time control method for denitrification by an enhanced circulating activated sludge method, which belongs to the field of biological denitrification of sewage and is suitable for advanced treatment of urban sewage. The effect of circulating activated sludge method on nitrogen and phosphorus removal is not ideal. The steps of the present invention: open the agitator in the main reaction zone at the same time as entering the water, and carry out the denitrification process under the anoxic condition, and stop stirring when a maximum value appears on the pH value curve and an inflection point appears on the ORP curve; Oxygen is supplied to the mixed solution to degrade organic matter and nitrify nitrogenous compounds, and stop aeration when a minimum value appears on the pH curve; repeat the above steps until the end of the water inflow stage, and react with the aerobic aeration stage end of period. The following process is similar to the traditional CAST method. It enters the sedimentation, drainage, and idle stages in turn, repeating all steps in turn and discharging sludge regularly. The whole process is completed by a real-time control system, which is easy to operate, low in cost, strong in impact load resistance, and not prone to sludge bulking.

The invention relates to an A/O denitrification sewage treatment process and a device capable of realizing sludge reduction. The process comprises the following steps: leading sewage in an anoxic zone to realize denitrification and then leading the treated sewage in an aeration zone to carry out aeration treatment; pumping part aerated sewage to the upper part of the anoxic zone to realize refluxing of mixed solution; leading residual sewage in a deposition zone to realize sludge-water separation through natural deposition; and pumping part deposited sludge to a sludge detention tank according to sludge refluxing ratio and then pumping the part deposited sludge to the upper part of the anoxic zone after 5.0 to 8.0 hours of detention to realize sludge refluxing. The A/O denitrification sewage treatment process and the device have the advantages that the process effectively combines sewage denitrification treatment and sludge reduction and has the advantages of both A/O denitrification process and OSA process, thereby realizing sludge reduction while ensuring effluent water quality; meanwhile, the process has simple flow and reduces material consumption and energy consumption; moreover, the process saves investment and does not cause potential problems in environmental safety; and the device has low investment and operation cost and convenient operation management.

The invention relates to a method for realizing nitrogenous wastewater biological treatment process, particularly to a method for realizing short distance deep denitrogenation. The inventive method includes a short distance deep denitrogenation starting-up stage, a stabilizing stage and a cooling stage; and comprises the steps of feeding water, aerating, denitrifying, settling, draining, sludge discharging, and idle running. In the short distance deep denitrogenation starting-up stage, the system temperature is 25 DEG C, the mean sludge retention time is 15 days, and the number of operating periods is 90-95; in the stabilizing stage, the system temperature is 25 DEG C, the sludge retention time is 15 days, and the number of operating periods is 60-65; and in the cooling stage, the system temperature is adjusted to 18 DEG C, the sludge retention time is 15 days, and after 30-35 operating periods, the temperature is adjusted to 11 DEG C, and the sludge retention time is 20 days. The inventive method has the advantages of good denitrogenation effect, high degree of automation, low energy consumption, and capability of stable operation under low temperature conditions.

The invention provides a silicon-carbon composite material, a preparation method thereof, a negative electrode, a power battery and an electric automobile. The silicon-carbon composite material comprises a housing layer, core-shell microspheres and a second nano-carbon material, wherein the material of the housing layer includes a first nano-carbon material, and an accommodating space is defined inside the housing layer; each core-shell structure microsphere is located in the accommodating space and provided with a core and a shell layer, the shell layer coats the core, the core includes nano-silicon particles, and the shell layer includes amorphous carbon; and the second nano-carbon material is linear, one part of the second nano-carbon material is located in the accommodating space, andthe other part of the second nano-carbon material is arranged in the first nano-carbon material in a penetrating manner. The silicon-carbon composite material can be used as a negative electrode material of the power battery, has the advantages of good conductivity, high capacity, good rate performance, and is not easy to expand or be powdered, high in stability and good in cycle performance.

The invention relates to the technical field of sewage treatment and discloses a system suitable for treating high concentration organic wastewater. The system comprises a feed hopper (1), a homogenizing tank (2), a biogas tank (3), an up-flow anaerobic sludge bed (4), a cyclic activated sludge bioreactor (5), a microelectrolysis reactor (10), a baffled biological aerated filter (BBAF) (6) and an ozone disinfection tank (7), which are connected in sequence, wherein the biogas tank is connected with a sludge thickening tank (8); a biogas purification and storage gas supply system comprises a gas-water separator (91), a biogas desulfurizer (92), a first flame arrester (931) and a gas storage tank (94) in sequence; and the gas-water separator (91) is also connected with a gas supercharging device (95), a second flame arrester (932) and a waste heat recovery device (96). The system and the method have the beneficial effects that the process is simple; the concentration gradient in the reaction process is large, so that sludge bulking is not easy to happen; the system has strong load impact resistance and good treatment effects; and the simultaneous denitrification and dephosphorization effects of the BBAF are obvious by adjusting the cycle of operation and controlling the working procedure time length.

The invention relates to the technical field of sewage treatment and discloses a system for treating wastewater by applying activated sludge. The system comprises a feed hopper (1), a homogenizing tank (2), a biogas tank (3), an up-flow anaerobic sludge bed (4), an activated sludge reaction tank (5), a microelectrolysis reactor (10), a baffled biological aerated filter (BBAF) (6) and an ozone disinfection tank (7), which are connected in sequence, wherein the biogas tank is connected with a sludge thickening tank (8). The invention also discloses a method for treating wastewater by applying activated sludge. The method comprises anaerobic digestion treatment, treatment by adopting an activated sludge method, microelectrolysis reaction, biochemical treatment with the BBAF and ozone disinfection. The system and the method have the beneficial effects that the process is simple; the concentration gradient in the reaction process is large, so that sludge bulking is not easy to happen; the system has strong load impact resistance and good treatment effects; and the simultaneous denitrification and dephosphorization effects of the BBAF are obvious by adjusting the cycle of operation and controlling the working procedure time length.

The invention discloses a treatment system coupling an iron-promoted magnetic loading anaerobic/anoxic activated sludge process and a biofilm process coupled treatment system, and relates to the technical field of sewage treatment. The system includes an anaerobic tank, an anoxic tank, a sedimentation tank, a biological membrane tank and a post-treatment system which are sequentially connected, wherein the anaerobic tank is connected with a composite iron-based promoter feeding system, and the sedimentation tank is also connected with a magnetic seed separation system. Compared with a conventional nitrogen and phosphorus removal process, the treatment system has the beneficial effects that the concentration of activated sludge of the treatment system can be greatly increased, the biological nitrogen and phosphorus removal effect can be enhanced; meanwhile, the risk of sludge bulking is reduced; the treatment system has the advantages of high process integration degree, good effect, reliable operation, convenient management, high load, small occupied area and the like.

The invention discloses a step-feed CAST nitrite denitrifying phosphorus removal method and a process control device thereof and belongs to the technical field of SBR and modified process sewage biologic denitrification thereof. The device comprises a selector, a main reaction area, a water inlet pump, a stirrer, a submersible mixer, a return sludge pump, an aerator, an air compressor, a water decanter, a drain valve, a mud valve and a real-time control system. By adopting integration of a multiple-water inlet running mode and a real-time control system, an organic carbon source in the original sewage is furthest utilized and furthermore, the ammoxidation, denitrifying dephosphatation and phosphorus release time in each stage is scientifically and reasonably distributed. The anaerobic stirring time is increased and operation based on a variable-duration anoxic/aerobic mode is adopted, the anoxic phosphorus uptake effect of the selector in the aerobiotic time and the anoxic phosphorus uptake effect of the main reaction area in the anoxic time are reinforced, and the anaerobic stirring time and the aerobic aerating time are controlled by a real-time process control strategy.

The invention discloses a dyeing and finishing wastewater treatment system which comprises a first-level treatment unit, a first-level precipitation unit, at least one set of second-level treatment unit and a second-level precipitation unit, wherein the second-level treatment unit is connected with a corresponding second-level precipitation unit; the first-level treatment unit comprises a grid pool and a wastewater regulating pool; the first-level precipitation unit comprises a coagulative precipitation tank; the second-level treatment unit comprises a hydrolytic acidification cell, a first aerobic contact oxidation cell, a second aerobic contact oxidation cell and a reaction buffering pool which are connected in sequence; the second-level precipitation unit comprises a second-level precipitation pool and a reverse multi-element filtering pool; and the reverse multi-element filtering pool is connected with a clean water pool. The invention also discloses a wastewater treatment technology adopting the dyeing and finishing wastewater treatment system. According to the dyeing and finishing wastewater treatment system and technology disclosed by the invention, the textile wastewater can be deeply treated, the wastewater can reach the standard of recycled water, multiple effects of reducing wastewater discharge, saving water resources and protecting environment can be achieved, and the dyeing and finishing wastewater treatment system can meet the market requirement of the textile dyeing and finishing industry.

The invention provides an anaerobic-aerobic stabilization process for high concentration organic wastewater. The process is as below: (1) wastewater is subjected to pretreatment and iron carbon micro electrolysis according to the quality and sent into a UASB anaerobic reactor for anaerobic digestion reaction; (2) UASB effluent is sent into a facultative sedimentation basin, which has the functions of an anaerobic tank; (3) liquid supernatant from the facultative sedimentation basin is sent into an SBAR aerobic reactor, wherein the sludge in the reactor is domesticated mature aerobic granular sludge, and air is introduced from the bottom of the aerobic reactor for air aeration treatment; (4) the sewage is subjected to sedimentation treatment in the aerobic reactor, and after sedimentation treatment the water flows out from a water outlet; (5) a reflux system can be set in the SBAR aerobic reactor according to quality of the outlet water, and part of the sludge in the SBAR aerobic reactor can be returned to the UASB anaerobic reactor; and (6) a reflux system can be set in the SBAR aerobic reactor according to quality of outlet mixed liquid, and part of the mixed liquid can be returned to the facultative sedimentation basin. Especially, wastewater indexes are as below: UASB inlet water preferably has COD at 1500-5000 mg / L, suspended solids less than 1500 mg / L, sulfate less than 1000 mg / L and ammonia nitrogen less than 2000 mg / L, and SBAR inlet water has COD concentration reaching 1000-1500 mg / L, ammonia nitrogen concentration less than 1500 mg / L and BOD / COD greater than 0.3.

The invention provides a method of feeding powdered activated carbon in the specific position for solving the problems occurring in the biochemical treatment process of waste water generated in paper making; and simultaneously, an anoxic pool is arranged for removing nitrates in the water, controlling TN in the discharged water and reducing the sludge bulking probability. The pretreated waste water generated in paper making automatically flows into or is lifted by a water pump to enter an anoxic zone of a high-efficiency biological strengthened treatment pool; the waste water treated in the anoxic zone automatically flows into an aerobic zone; the waste water treated in the aerobic zone automatically flows into a settling zone; and the water treated in the settling zone automatically flows into or is lifted by the water pump to enter subsequent treatment units or is discharged. The reactor enables the biochemical treatment unit of the waste water generated in paper making to have the advantages of stable operation, better quality of the discharged water, reduced operation cost and the like.

The invention discloses a miniature no-decanter SBR integrated sewage processing system. The miniature no-decanter SBR integrated sewage processing system comprises a control apparatus, an equalizing tank, a device room, a SBR reaction tank and a clean water tank; a sewage elevator pump and an aeration apparatus are arranged in the device chamber, an inlet of the sewage elevator pump is communicated with the bottom of the equalizing tank, the outlet of the sewage elevator pump is communicated with the upper part of the SBR reaction tank; the aeration apparatus is communicated with the SBR reaction tank; a center water distributor is arranged in the SBR reaction tank, the center water distributor and the water outlet of the elevator pump are communicated; an downcast pipe is arranged between the equalizing tank and the SBR reaction tank, a downcast electrically operated valve is arranged on the downcast pipe; the control apparatus is used for controlling the sewage elevator pump, the aeration apparatus and the downcast electrically operated valve. The sewage is sent to the bottom of the SBR reaction tank by the center water distributor, at the same time, the water at the upper part of the SBR reaction tank is discharged to a clean water tank, so that SBR sewage treatment of a no-decanter is realized. An integrated design of the equalizing tank, the device chamber, the SBR reaction tank and the clean water tank is employed, so that the process flow is shortened, land occupation area is small, and the construction cost is low.

The invention relates to the technical field of wastewater treatment and discloses a treatment system of high-concentration ammonia nitrogen organic wastewater. The system comprises a feed hopper (1), a homogenating tank (2), a methane tank (3), an upstream type anaerobic sludge bed reactor (4), a biological contact oxidation pond (5), a secondary sedimentation tank (11), a micro electrolytic reactor (10), a circular aeration biological filter (6) and an ozone disinfection tank (7), and the methane tank is connected with a sludge thickener (8). The invention further discloses a treatment method of the high-concentration ammonia nitrogen organic wastewater. The treatment method comprises anaerobic digestion treatment, activated sludge treatment, micro-electrolysis reaction, circular aeration biological filter biochemical treatment and ozone disinfection. The process is simple, the reaction process concentration gradient is large, and sludge is not prone to bulking; the capability to resist impact load is high, and the treatment effect is good; all working procedure time is controlled by adjusting the operation period, and at the same time, denitrification and phosphorus removal effects are remarkable.

The invention provides a method for testing the sealing property of a battery, and a method for testing the quality of the battery. The method for testing the sealing property of the battery comprisesthe following steps: performing a first vacuum treatment on a battery preform to be tested; performing an inflation treatment on the battery preform to be tested subject to the first vacuum treatment, comprising performing a second vacuum treatment on the battery preform to be tested after injecting a gas to be detected into the battery preform to be tested; performing a sealing treatment on thebattery preform to be tested subject to the second vacuum treatment to obtain a battery to be tested; detecting whether the gas to be detected leaks from the battery to be tested to obtain the sealingproperty of the battery to be tested; if no gas to be detected leaks from the battery to be tested, indicating that the sealing property of the battery to be tested is good; and if the gas to be detected leaks from the battery to be tested, indicating that the sealing property of the battery to be tested is not good. The method is simple and convenient to operate and is easy to implement, the battery after the sealing property is tested still has a relatively high vacuum degree, so that the battery is unlikely to generate expansion in a charging and discharging process, and the cycle performance of the battery is not affected.

The invention discloses a granular sludge-containing microbial fuel cell device. The granular sludge-containing microbial fuel cell device comprises an anode chamber, a cathode chamber and a precipitation chamber, wherein holes are formed in the side wall of the anode chamber; the outer part of the side wall of the anode chamber is wrapped with an ion exchange membrane; the cathode chamber surrounds the anode chamber; a liquid outlet for discharging water into the precipitation chamber is formed in the top of the cathode chamber; a liquid distributor and anaerobic granular sludge are arrangedinside the anode chamber; and aerobic granular sludge is arranged inside the cathode chamber. The granular sludge-containing microbial fuel cell device not only can perform sewage treatment, but alsocan generate electricity through the action of microorganisms with wastewater as an energy source, so that comprehensive and reasonable resource utilization is achieved. The granular sludge-containingmicrobial fuel cell device adopts a simple and easily implemented operating method, is small in land occupation and low in investment, achieves continuous operation, can treat high-concentration organic wastewater, has very high pollutant removing efficiency, and has a broad engineering application prospect.

The invention discloses buried sewage processing equipment, which mainly comprises a control box, an equipment room, an anaerobic tank, an anoxic tank, an aerobic tank, and an ultrafiltration membranetank; all operation rooms are communicated with each other; the bottom end of the equipment is provided with a water inlet; and the top end of the equipment is provided with a water outlet. Sewage isintroduced into the equipment from the bottom end, sequentially goes through the anaerobic tank, the anoxic tank, and the aerobic tank, and finally is discharged from the water outlet after going through the ultrafiltration membrane tank. The energy consumption of the equipment is largely reduced; due to a novel ultrafiltration membrane, the occupied area is largely reduced, the sewage processingeffect is good, and the gas utilization rate is high. Sewage is decomposed in each operation room, and the effluent reaches the discharge standards.

The invention provides an asphalt concrete for road construction and a preparation method thereof. The preparation method includes: adding asphalt, modified lignin fiber, carbon fiber and an organosilicon high-boiling matter into a reaction kettle, then adding aggregate, raising the temperature and mixing the substances evenly, thus obtaining the asphalt concrete for road construction.

The invention discloses an activated sludge multiplication method which comprises the following steps: culturing granular sludge, screening the granular sludge and refluxing underflow granular sludge.The method has the beneficial effects that the screened granular sludge is refluxed, and the amount of sludge needing to be treated subsequently is reduced; the functions of simultaneously degradingorganic matters and removing nitrogen and phosphorus are realized, and the effluent quality is integrally improved; transformation is conducted on an existing pipeline, and the transformation cost isreduced; and the mode is simple and easy to operate, and the energy consumption and operation cost are reduced.

The invention provides a biochemical treatment method of refinery wastewater. A UASB (upflow anaerobic sludge blanket) anaerobic reactor and an SBR (sequencing batch reactor) aerobic reactor which areconnected in series are arranged, and cultured and acclimated anaerobic granular sludge and aerobic granular sludge are arranged in the UASB anaerobic reactor and the SBR aerobic reactor respectively. The treatment method comprises following processes: a UASB and an SBR operate, to-be-treated refinery wastewater is introduced into the UASB and subjected to anaerobic treatment, and after the wastewater subjected to the anaerobic treatment is discharged, the wastewater is introduced into the SBR and subjected to aerobic treatment, wherein oil content of the to-be-treated refinery wastewater isnot higher than 300 mg/L, COD of the wastewater entering the SBR is 200-600 mg/L, and pH is 6.5-7.5. With the adoption of the treatment method, sludge loss can be avoided, the area occupied by the reactor is saved, the infrastructure investment cost is reduced, and the index of the treated wastewater can meet the related industry standard.

The invention belongs to the technical field of environmental protection, and in particular relates to a sewage treatment method by adding traditional Chinese medicine treatment agents. The method comprises the following steps: inputting sewage into a mechanical grid; leading the sewage passing through the mechanical grid to enter a water collection and regulating tank; inputting the sewage in the water collection and regulating tank into a sewage cooling tower; inputting the sewage cooled by the cooling tower into a coagulating sedimentation tank; leading the sewage treated by coagulating sedimentation to enter a CASS (cyclic activated sludge system) tank; leading the sewage treated in the CASS tank to flow through a biofilter tank to obtain the treated water. The method has the advantages that the traditional Chinese medicine treatment agents are added into the CASS tank, and harmful substances cannot be generated in the whole process because the traditional Chinese medicine treatment agents are pure natural substances.